The mosquito-transmitted Zika virus which is believed to have originated in Africa, is in Asia and South American and heading north:

January 4, 2016

Zika virus is spread to people through mosquito bites. The most common symptoms of Zika virus disease are fever, rash, joint pain, and conjunctivitis (red eyes). The illness is usually mild with symptoms lasting from several days to a week. …

The virus you likely never heard of is steadily marching north from Brazil. It’s Zika, spread by Aedes mosquitoes. It’s a flavivirus related to yellow fever, West Nile, Chikungunya, and dengue. The latest two that hit the U.S., Chikungunya and dengue, are painful and bad enough—and dengue can kill people who are infected more than once. Zika adds an added nasty punch of perhaps causing microcephaly⁠, a birth defect where babies are born with abnormally small skulls and brains, and often have developmental abnormalities. …

The biggest concern about Zika thus far is whether this virus is the cause of the surge in cases of microcephaly. To me, this seems likely, given the increase of these birth defects noted both in Fiji and in Brazil, corresponding with the outbreaks of Zika. There is no definitive proof yet…but it is further evidence that there are now two cases of Zika virus being isolated from amniotic fluid, explaining how fetuses might become infected. There was another report from Brazil of Zika virus found in the blood and tissue of a newborn with microcephaly, who died within minutes of birth. http://www.forbes.com/sites/judystone/2016/01/04/zika-coming-to-america-through-mosquitoes-travel-and-sex/

Here is some of what the CDC says about it:

Outbreaks of Zika have occurred in areas of Africa, Southeast Asia, the Pacific Islands, and the Americas. Because the Aedes species mosquitoes that spread Zika virus are found throughout the world, it is likely that outbreaks will spread to new countries. In December 2015, Puerto Rico reported its first confirmed Zika virus case. Locally transmitted Zika has not been reported elsewhere in the United States, but cases of Zika have been reported in returning travelers.

There is no vaccine to prevent or medicine to treat Zika. Travelers can protect themselves from this disease by taking steps to prevent mosquito bites. http://www.cdc.gov/zika/

There are many mosquito-transmitted infections. Some are more likely to be pestilential than others.

The old WCG published the following about disease:

Parallel prophecies found in the Old Testament clearly indicate why man will continue to suffer from the ravages of disease. Notice this cause-and ­effect relationship as outlined in the 28th chapter of Deuteronomy: “But if you will not obey the voice of the Lord your God,” warns man’s Creator, “the Lord will make the pestilence cling to you until He has consumed you from off the land, which you go to possess. The Lord will smite you with consumption [wasting, degenerative disease], with fever and inflammation [possibly infectious contagions).... and the tumors, the scurvy [deficiency disease] and the itch, of which you cannot be healed. The Lord will smite you with madness [mental disorders] and blindness and dismay of heart [emotional trauma]” (verses 15, 21-22, 27-28, The Amplified Bible).

Misgovernment, greed and oppression over the course of nearly 6000 years of history have saddled the human race with the unwanted burden of disease. For instance, man’s proclivity to crowd into disease — prone cities is indicative of this problem. And it is interesting to note that Bible prophecy seems to indicate that this crowd-at­all-costs policy will eventually backfire on the human race. Notice Leviticus 26:25: “… And when ye are gathered together within your cities, I will send the pestilence among you… .” Also Ezekiel 7:15: “The sword is without, and the pestilence and the famine within: he that is in the field shall die with the sword; and he that is in the city, famine and pestilence shall devour him.”

Jesus Himself warned that the “signs” of the end of the age would include pestilences:

7…And there will be famines, pestilences, and earthquakes in various places. 8 All these are the beginning of sorrows. (Matthew 24:6-8)

11 And there will be great earthquakes in various places, and famines and pestilences; and there will be fearful sights and great signs from heaven. (Luke 21:11)

Whether or not the Zika virus is to be pestilential will be seen. But there are more and more infections popping up and pestilences are coming.